User contributions
(Latest | Earliest) View (newer 250 | older 250) (20 | 50 | 100 | 250 | 500)
- 16:17, 13 February 2024 (diff | hist) SEm/laboratoires/00 installation (→Sources) (top)
- 16:03, 13 February 2024 (diff | hist) SEm/laboratoires/00 installation (→Sources)
- 16:02, 13 February 2024 (diff | hist) SEm/laboratoires/00 installation (→Sources)
- 16:00, 13 February 2024 (diff | hist) SEm/laboratoires/00 installation (→Sources)
- 13:56, 28 August 2023 (diff | hist) Kart (→Design environment) (top)
- 14:50, 4 August 2023 (diff | hist) Kart (→Design environment)
- 13:16, 7 July 2023 (diff | hist) Libero IDE presentation (→On Windows) (top)
- 11:49, 7 July 2023 (diff | hist) Kart/serial link (→Sensors) (top)
- 11:35, 7 July 2023 (diff | hist) Kart/serial link (→Frame example)
- 16:42, 26 August 2022 (diff | hist) Kart
- 16:37, 26 August 2022 (diff | hist) N File:Kart batmobile.gif (top)
- 16:06, 26 August 2022 (diff | hist) Kart/Sensors (→LEDs / Low-consumption outputs)
- 16:06, 26 August 2022 (diff | hist) N File:Pmodod1.png (top)
- 16:04, 26 August 2022 (diff | hist) Kart/Sensors (→Buttons / Digital inputs)
- 16:03, 26 August 2022 (diff | hist) N File:Pmodcon3.png (top)
- 16:03, 26 August 2022 (diff | hist) N File:Pmodcon1.png (top)
- 16:02, 26 August 2022 (diff | hist) Kart/Sensors (→Custom circuits)
- 16:01, 26 August 2022 (diff | hist) N File:Pmodbb.jpg (top)
- 15:47, 26 August 2022 (diff | hist) Kart/Sensors
- 15:46, 26 August 2022 (diff | hist) Kart/Sensors (→Buttons / Digital inputs)
- 14:59, 26 August 2022 (diff | hist) Kart/Sensors
- 14:26, 26 August 2022 (diff | hist) Libero IDE presentation (→Configuring the FPGA)
- 14:20, 26 August 2022 (diff | hist) N File:AGLN250 OpenOCDSupport.zip (top)
- 14:17, 26 August 2022 (diff | hist) N File:Kart zadig.jpg (top)
- 13:35, 26 August 2022 (diff | hist) N File:Kart flashpro.png (top)
- 13:28, 26 August 2022 (diff | hist) Libero IDE presentation
- 15:52, 25 August 2022 (diff | hist) Kart/stepper motor controller (→Tests)
- 15:41, 25 August 2022 (diff | hist) Kart/stepper motor controller (→Initial position)
- 15:37, 25 August 2022 (diff | hist) Kart/stepper motor controller (→Initial position)
- 09:54, 24 August 2022 (diff | hist) File:Kart sensors module.jpg (uploaded a new version of "File:Kart sensors module.jpg") (top)
- 09:54, 24 August 2022 (diff | hist) File:Kart stepper module.jpg (uploaded a new version of "File:Kart stepper module.jpg") (top)
- 09:54, 24 August 2022 (diff | hist) File:Kart dc module.jpg (uploaded a new version of "File:Kart dc module.jpg") (top)
- 09:47, 24 August 2022 (diff | hist) File:Kart stepper module.jpg (uploaded a new version of "File:Kart stepper module.jpg")
- 09:47, 24 August 2022 (diff | hist) File:Kart sensors module.jpg (uploaded a new version of "File:Kart sensors module.jpg")
- 09:47, 24 August 2022 (diff | hist) File:Kart dc module.jpg (uploaded a new version of "File:Kart dc module.jpg")
- 09:45, 24 August 2022 (diff | hist) File:Kart sensors module.jpg (uploaded a new version of "File:Kart sensors module.jpg")
- 09:44, 24 August 2022 (diff | hist) File:Kart dc module.jpg (uploaded a new version of "File:Kart dc module.jpg")
- 09:22, 24 August 2022 (diff | hist) Kart/stepper motor controller (→Testing)
- 09:01, 24 August 2022 (diff | hist) Kart/DC motor controller (→FPGA design)
- 09:01, 24 August 2022 (diff | hist) Kart/DC motor controller (→FPGA design)
- 08:56, 24 August 2022 (diff | hist) Kart/DC motor controller (→Tests)
- 11:54, 23 August 2022 (diff | hist) Libero IDE presentation (→Tips)
- 11:53, 23 August 2022 (diff | hist) N File:Libero attributes.png (top)
- 16:40, 22 August 2022 (diff | hist) Libero IDE presentation (→Clocks)
- 16:38, 22 August 2022 (diff | hist) Libero IDE presentation (→Tips)
- 16:36, 22 August 2022 (diff | hist) N File:Libero multiclocks.png (top)
- 15:42, 22 August 2022 (diff | hist) Libero IDE presentation
- 15:37, 22 August 2022 (diff | hist) N File:Libero pdc warning.png (top)
- 15:16, 22 August 2022 (diff | hist) Kart/Sensors (→Operating procedure)
- 15:11, 22 August 2022 (diff | hist) Kart/Sensors (→Operating procedure)
- 15:11, 22 August 2022 (diff | hist) Kart/Sensors (→LEDs / Low-consumption outputs)
- 17:10, 18 August 2022 (diff | hist) Kart/serial link (→Testing through USB)
- 17:06, 18 August 2022 (diff | hist) Kart/serial link (→Kart init)
- 17:05, 18 August 2022 (diff | hist) Kart/serial link (→Control Registers)
- 17:03, 18 August 2022 (diff | hist) Kart/serial link (→Sensors)
- 17:01, 18 August 2022 (diff | hist) Kart/serial link (→Stepper Motor)
- 17:00, 18 August 2022 (diff | hist) Kart/serial link (→Message Format)
- 16:58, 18 August 2022 (diff | hist) Kart/Sensors (→Testing)
- 16:57, 18 August 2022 (diff | hist) Kart/Sensors
- 16:56, 18 August 2022 (diff | hist) Kart/Sensors (→Operating procedure)
- 16:55, 18 August 2022 (diff | hist) Kart/Sensors (→LEDs / Low-consumption outputs)
- 16:53, 18 August 2022 (diff | hist) Kart/Sensors (→FPGA design)
- 16:51, 18 August 2022 (diff | hist) Kart/Sensors (→FPGA design)
- 16:48, 18 August 2022 (diff | hist) Kart/Sensors (→Operating procedure)
- 16:47, 18 August 2022 (diff | hist) File:Kart sensors module.jpg (uploaded a new version of "File:Kart sensors module.jpg")
- 16:44, 18 August 2022 (diff | hist) Kart/stepper motor controller (→Initial position)
- 16:38, 18 August 2022 (diff | hist) Kart/DC motor controller (→Bluetooth connection)
- 16:33, 18 August 2022 (diff | hist) File:Kart dc block.jpg (uploaded a new version of "File:Kart dc block.jpg") (top)
- 16:31, 18 August 2022 (diff | hist) File:Kart dc module.jpg (uploaded a new version of "File:Kart dc module.jpg")
- 16:26, 18 August 2022 (diff | hist) Kart/Daughterboard (→Testing) (top)
- 16:19, 18 August 2022 (diff | hist) Kart/Daughterboard (→Programming)
- 16:12, 18 August 2022 (diff | hist) Kart/Motherboard (→PMOD)
- 16:05, 18 August 2022 (diff | hist) Kart/Motherboard (→Power)
- 14:55, 18 August 2022 (diff | hist) Kart (→Sensors)
- 14:53, 18 August 2022 (diff | hist) Kart (→Hardware)
- 14:49, 18 August 2022 (diff | hist) Kart/Bluetooth (top)
- 18:08, 25 July 2022 (diff | hist) Kart/serial link (→Stepper Motor)
- 18:07, 25 July 2022 (diff | hist) Kart/serial link (→Stepper Motor)
- 18:07, 25 July 2022 (diff | hist) Kart/serial link (→Sensors)
- 09:39, 22 July 2022 (diff | hist) Kart/serial link (→Sensors)
- 10:34, 21 July 2022 (diff | hist) Kart/serial link (→Sensors)
- 10:34, 21 July 2022 (diff | hist) Kart/serial link (→Sensors)
- 14:10, 19 July 2022 (diff | hist) Kart/serial link (→Simple operation)
- 14:09, 19 July 2022 (diff | hist) Kart/serial link (→Simple operation)
- 15:08, 4 July 2022 (diff | hist) Kart/serial link (→Testing through USB)
- 15:05, 4 July 2022 (diff | hist) Kart/serial link (→Control Registers)
- 14:46, 4 July 2022 (diff | hist) N File:Kart kci.jpg (top)
- 14:39, 4 July 2022 (diff | hist) Kart/Daughterboard
- 14:39, 4 July 2022 (diff | hist) Kart/serial link
- 13:26, 4 July 2022 (diff | hist) Kart/Daughterboard
- 13:14, 4 July 2022 (diff | hist) N File:Kart kart tester sim.jpg (top)
- 13:11, 4 July 2022 (diff | hist) N File:Kart kart tester uvm.jpg (top)
- 13:11, 4 July 2022 (diff | hist) N File:Kart kart tester.jpg (top)
- 12:49, 4 July 2022 (diff | hist) Kart (→FPGA Design)
- 11:49, 4 July 2022 (diff | hist) Kart/Sensors (→Testing)
- 11:41, 4 July 2022 (diff | hist) File:Kart sensors tester sim.jpg (uploaded a new version of "File:Kart sensors tester sim.jpg") (top)
- 11:38, 4 July 2022 (diff | hist) N File:Kart sensors tester sim.jpg
- 11:38, 4 July 2022 (diff | hist) Kart/Sensors (→Testing)
- 11:37, 4 July 2022 (diff | hist) Kart/Sensors (→Testing)
- 11:37, 4 July 2022 (diff | hist) Kart/Sensors (→Ultrasound ranger)
- 11:37, 4 July 2022 (diff | hist) Kart/Sensors (→Testing)
- 11:36, 4 July 2022 (diff | hist) Kart/Sensors
- 11:36, 4 July 2022 (diff | hist) Kart/Sensors (→Hall sensors)
- 11:34, 4 July 2022 (diff | hist) N File:Kart sensors tester.jpg (top)
- 11:31, 4 July 2022 (diff | hist) Kart/DC motor controller (→Tests)
- 11:31, 4 July 2022 (diff | hist) Kart/stepper motor controller (→Tests)
- 11:30, 4 July 2022 (diff | hist) Kart/DC motor controller (→Tests)
- 11:30, 4 July 2022 (diff | hist) Kart/stepper motor controller
- 11:16, 4 July 2022 (diff | hist) N File:Kart stepper tester sim.jpg (top)
- 11:14, 4 July 2022 (diff | hist) N File:Kart stepper tester.jpg (top)
- 11:10, 4 July 2022 (diff | hist) Kart/DC motor controller
- 10:56, 4 July 2022 (diff | hist) N File:Kart dc tester sim.jpg (top)
- 10:52, 4 July 2022 (diff | hist) N File:Kart dc tester.jpg (top)
- 10:48, 4 July 2022 (diff | hist) Kart/DC motor controller (→FPGA design)
- 10:38, 4 July 2022 (diff | hist) N File:Kart dc block.jpg
- 10:36, 4 July 2022 (diff | hist) Kart/stepper motor controller (→Connector)
- 10:36, 4 July 2022 (diff | hist) Kart/stepper motor controller (→FPGA design)
- 10:30, 4 July 2022 (diff | hist) N File:Kart stepper block.jpg (top)
- 10:27, 4 July 2022 (diff | hist) Kart/Sensors (→FPGA design)
- 10:24, 4 July 2022 (diff | hist) Kart/Sensors (→FPGA design)
- 10:23, 4 July 2022 (diff | hist) Kart/Sensors (→FPGA design)
- 09:31, 4 July 2022 (diff | hist) Kart/Sensors (→FPGA design)
- 09:07, 4 July 2022 (diff | hist) N File:Kart ranger block.jpg (top)
- 09:07, 4 July 2022 (diff | hist) N File:Kart hall block.jpg (top)
- 10:41, 30 June 2022 (diff | hist) Kart/Sensors
- 10:41, 30 June 2022 (diff | hist) Kart/DC motor controller
- 10:40, 30 June 2022 (diff | hist) Kart/stepper motor controller
- 10:39, 30 June 2022 (diff | hist) File:Kart sensors module.jpg (uploaded a new version of "File:Kart sensors module.jpg")
- 10:39, 30 June 2022 (diff | hist) File:Kart stepper module.jpg (uploaded a new version of "File:Kart stepper module.jpg")
- 10:38, 30 June 2022 (diff | hist) File:Kart dc module.jpg (uploaded a new version of "File:Kart dc module.jpg")
- 10:29, 30 June 2022 (diff | hist) Kart/Sensors
- 10:29, 30 June 2022 (diff | hist) Kart/stepper motor controller
- 10:28, 30 June 2022 (diff | hist) Kart/DC motor controller
- 10:27, 30 June 2022 (diff | hist) Kart/Bluetooth
- 10:26, 30 June 2022 (diff | hist) Kart/Motherboard (→PMOD)
- 10:25, 30 June 2022 (diff | hist) Kart/Motherboard
- 10:24, 30 June 2022 (diff | hist) File:Kart motherboard pcb.jpg (uploaded a new version of "File:Kart motherboard pcb.jpg") (top)
- 10:23, 30 June 2022 (diff | hist) Kart/Motherboard
- 10:21, 30 June 2022 (diff | hist) Kart/Daughterboard
- 10:20, 30 June 2022 (diff | hist) N File:SummerSchool 18.jpg (Two karts from the Summer School 18) (top)
- 10:20, 30 June 2022 (diff | hist) N File:Kart stepper module.jpg (Stepper Module (VHDL) for the Kart)
- 10:20, 30 June 2022 (diff | hist) N File:Kart sodimm pining.pdf (FPGA-EBS3 SODIMM200 pining for the Kart) (top)
- 10:19, 30 June 2022 (diff | hist) N File:Kart sensors module.jpg (Sensors module (VHDL) for the Kart)
- 10:19, 30 June 2022 (diff | hist) N File:Kart pmod pining.jpg (Kart modified PMOD pinning (with +12V input)) (top)
- 10:18, 30 June 2022 (diff | hist) N File:Kart nrf52840.png (nrf52840 USB dongle) (top)
- 10:18, 30 June 2022 (diff | hist) N File:Kart motherboard schematic.PDF (FPGA-EBS3 Motherboard Schematic for the Kart) (top)
- 10:17, 30 June 2022 (diff | hist) N File:Kart motherboard pcb.jpg (FPGA-EBS3 Motherboard)
- 10:16, 30 June 2022 (diff | hist) N File:Kart dc stepper schematic.pdf (DC/Stepper motor controller schematic for the Kart) (top)
- 10:16, 30 June 2022 (diff | hist) N File:Kart dc module.jpg (DC Module (VHDL) for the Kart)
- 10:15, 30 June 2022 (diff | hist) N File:Kart daughterboard schematic.PDF (FPGA-EBS3 Daughterboard Schematic (AGLN250)) (top)
- 10:09, 30 June 2022 (diff | hist) N File:Kart daughterboard pcb.jpg (top)
- 15:32, 29 June 2022 (diff | hist) Kart/serial link (→Serial port)
- 14:20, 28 June 2022 (diff | hist) Kart/serial link
- 13:34, 28 June 2022 (diff | hist) Kart/stepper motor controller (→Hardware)
- 13:21, 28 June 2022 (diff | hist) Kart/stepper motor controller (→Connector)
- 11:43, 28 June 2022 (diff | hist) Kart (→Design environment)
- 11:38, 28 June 2022 (diff | hist) Kart/serial link
- 11:38, 28 June 2022 (diff | hist) Kart/Bluetooth (→Connection between the FPGA and the Bluetooth module)
- 11:37, 28 June 2022 (diff | hist) Kart/Motherboard (→BLE Socket)
- 11:34, 28 June 2022 (diff | hist) Kart (→Sensors)
- 11:30, 28 June 2022 (diff | hist) Kart (→Power supply)
- 11:30, 28 June 2022 (diff | hist) Kart (→Virtual Kart)
- 11:27, 28 June 2022 (diff | hist) Kart (→Design environment)
- 11:23, 28 June 2022 (diff | hist) Kart (→Distributed controls)
- 11:21, 28 June 2022 (diff | hist) Kart/Bluetooth (→Connectors)
- 11:21, 28 June 2022 (diff | hist) Kart/Bluetooth
- 11:07, 28 June 2022 (diff | hist) Kart/serial link (→Serial link protocol)
- 11:02, 28 June 2022 (diff | hist) Kart/serial link
- 08:57, 28 June 2022 (diff | hist) Kart/serial link
- 08:08, 28 June 2022 (diff | hist) Kart/Sensors
- 08:08, 28 June 2022 (diff | hist) Kart/Sensors
- 07:41, 28 June 2022 (diff | hist) Kart/Sensors (→Hall sensors)
- 18:55, 27 June 2022 (diff | hist) Kart/Sensors (→Buttons / Digital inputs)
- 18:55, 27 June 2022 (diff | hist) Kart/Sensors
- 18:39, 27 June 2022 (diff | hist) Kart/Daughterboard (→I/Os)
- 17:45, 27 June 2022 (diff | hist) Kart/Motherboard
- 17:44, 27 June 2022 (diff | hist) Kart/Daughterboard
- 17:43, 27 June 2022 (diff | hist) Kart (→Distributed controls)
- 17:43, 27 June 2022 (diff | hist) Kart (→Modules designs)
- 17:40, 27 June 2022 (diff | hist) Kart/Motherboard (→I/Os)
- 17:40, 27 June 2022 (diff | hist) N Kart/Sensors (Created page with "{{TOC right}} TODO")
- 17:38, 27 June 2022 (diff | hist) Kart (→Hardware)
- 17:37, 27 June 2022 (diff | hist) Kart (→Power supply)
- 17:34, 27 June 2022 (diff | hist) Kart/Motherboard
- 13:45, 27 June 2022 (diff | hist) Kart/Daughterboard
- 13:02, 27 June 2022 (diff | hist) Kart/DC motor controller
- 12:52, 27 June 2022 (diff | hist) Kart/stepper motor controller
- 12:36, 27 June 2022 (diff | hist) Kart/stepper motor controller (→Connector)
- 12:35, 27 June 2022 (diff | hist) Kart/stepper motor controller
- 10:54, 27 June 2022 (diff | hist) Kart (→Components)
- 10:50, 27 June 2022 (diff | hist) Kart (→Power supply)
- 10:48, 27 June 2022 (diff | hist) N Kart/Daughterboard (Created page with "{{TOC right}} TODO")
- 10:42, 27 June 2022 (diff | hist) Kart/Motherboard
- 10:41, 27 June 2022 (diff | hist) N Kart/Motherboard (Created page with "{{private}} {{TOC right}} TODO")
- 10:27, 27 June 2022 (diff | hist) Kart (→Distributed controls)
- 10:24, 27 June 2022 (diff | hist) Kart (→Board designs)
- 09:30, 27 June 2022 (diff | hist) Kart (→Hardware)
- 17:09, 23 June 2022 (diff | hist) Kart (→System Architecture)
- 16:47, 23 June 2022 (diff | hist) Kart (→Tasks)
- 16:46, 23 June 2022 (diff | hist) Kart (→Distributed boards)
- 16:44, 23 June 2022 (diff | hist) Kart (→Distributed boards)
- 14:46, 23 June 2022 (diff | hist) Kart/gallery (top)
- 14:46, 23 June 2022 (diff | hist) Kart/gallery
- 07:16, 12 May 2022 (diff | hist) Kart/serial link (→Message Format)
- 10:38, 6 May 2022 (diff | hist) SEm/escapeLab/Morse code (→Specifications) (top)
- 18:14, 5 May 2022 (diff | hist) SEm/escapeLab (→Objects placement)
- 17:58, 5 May 2022 (diff | hist) SEm/escapeLab/safe how-to (→Opening the safe) (top)
- 17:54, 5 May 2022 (diff | hist) N SEm/escapeLab/safe how-to (Created page with "{{TOC right}} = Opening the safe = The safe is opened by turning the knob to the first key, pressing the knob, turning the knob to the second key, pressing the knob, and so o...")
- 17:47, 5 May 2022 (diff | hist) SEm/escapeLab (→Safe)
- 17:44, 5 May 2022 (diff | hist) SEm/escapeLab
- 17:41, 5 May 2022 (diff | hist) SEm/escapeLab (→Periodic signal)
- 17:40, 5 May 2022 (diff | hist) SEm/escapeLab/signal generator (→Specifications) (top)
- 17:38, 5 May 2022 (diff | hist) N File:Escape sinewave sum.png (top)
- 17:21, 5 May 2022 (diff | hist) SEm/escapeLab (→Morse code)
- 17:17, 5 May 2022 (diff | hist) SEm/escapeLab (→RGB LED)
- 17:17, 5 May 2022 (diff | hist) SEm/escapeLab/LED strip (→Specifications) (top)
- 17:13, 5 May 2022 (diff | hist) SEm/escapeLab/LED strip (→Specifications)
- 17:02, 5 May 2022 (diff | hist) SEm/escapeLab (→LFSR)
- 17:00, 5 May 2022 (diff | hist) SEm/escapeLab/LFSR (→Specifications) (top)
- 16:59, 5 May 2022 (diff | hist) SEm/escapeLab/LFSR
- 16:57, 5 May 2022 (diff | hist) SEm/escapeLab/LFSR (→Specifications)
- 16:54, 5 May 2022 (diff | hist) SEm/escapeLab/signal generator
- 16:51, 5 May 2022 (diff | hist) SEm/escapeLab/signal generator (→Specifications)
- 16:49, 5 May 2022 (diff | hist) SEm/escapeLab (→Periodic signal)
- 16:33, 5 May 2022 (diff | hist) SEm/escapeLab (→Periodic signal)
- 16:23, 5 May 2022 (diff | hist) SEm/escapeLab/signal generator
- 16:23, 5 May 2022 (diff | hist) N SEm/escapeLab/signal generator (Created page with "{{TOC right}} <div class="center" style="width: auto; margin-left: auto; margin-right: auto; font-size:2em"> Welcome to the SEM escape lab </div> <div class="center" style="...")
- 16:10, 5 May 2022 (diff | hist) SEm/escapeLab/Morse code
- 16:10, 5 May 2022 (diff | hist) SEm/escapeLab/Morse code
- 16:09, 5 May 2022 (diff | hist) SEm/escapeLab/Morse code
- 16:09, 5 May 2022 (diff | hist) SEm/escapeLab/Morse code
- 16:08, 5 May 2022 (diff | hist) SEm/escapeLab/Morse code
- 16:07, 5 May 2022 (diff | hist) N SEm/escapeLab/Morse code (Created page with "{{TOC right}} <div class="center" style="width: auto; margin-left: auto; margin-right: auto; font-size:2em"> Welcome to the SEM escape lab </div> <div class="center" style="...")
- 15:30, 5 May 2022 (diff | hist) SEm/escapeLab
- 15:07, 5 May 2022 (diff | hist) SEm/escapeLab (→RGB LED)
- 15:02, 5 May 2022 (diff | hist) SEm/escapeLab (→RGB LED)
- 14:59, 5 May 2022 (diff | hist) SEm/escapeLab/LED strip
- 14:58, 5 May 2022 (diff | hist) SEm/escapeLab/LED strip
- 14:56, 5 May 2022 (diff | hist) SEm/escapeLab/spline (top)
- 14:56, 5 May 2022 (diff | hist) SEm/escapeLab/LFSR
- 14:55, 5 May 2022 (diff | hist) SEm/escapeLab/LFSR
- 14:55, 5 May 2022 (diff | hist) SEm/escapeLab/LFSR
- 14:53, 5 May 2022 (diff | hist) SEm/escapeLab (→Spline)
- 14:41, 5 May 2022 (diff | hist) SEm/escapeLab (→Morse code)
- 16:49, 4 May 2022 (diff | hist) SEm/escapeLab (→RGB LED)
- 11:12, 15 March 2021 (diff | hist) SEm
- 14:47, 8 March 2021 (diff | hist) SEm/laboratoires/machine d etat (→Machine d'états)
- 14:45, 8 March 2021 (diff | hist) SEm/laboratoires/09 pipeline (→Compteur rapide)
- 12:50, 8 March 2021 (diff | hist) N SEm/HD/labs/presentations/pipeline (Created page with "{{private}} {{TOC right}} = Pipeline idea = The pipeline idea can be cut into 5 parts : center Distribute input * The input must be s...") (top)
- 12:45, 8 March 2021 (diff | hist) N File:SEm-labs fastadder.png (Fast adder pipeline idea) (top)
(Latest | Earliest) View (newer 250 | older 250) (20 | 50 | 100 | 250 | 500)