Collaboration page for reverse engineering a trove of Duhampel Flipdot displays
- Document individual Module Components circuitry (as documented here, thanks to VVA!)
- Document individual Module 3D characteristics (as documented here, thanks to DPE)
- Select Module to Module Connector, See Ref 1 below
- Select, test, and implement Power-Supply (must supply +12V and -12V)
- Select, test, and implement individual flipdot SET control chipset / componentry
- ULN2003A 7xNPN Darlington Array - purchased, not yet tested
- Select, test, and implement full line flipdot RESET control chipset / componentry - may pull up to ~16A at 12V!!
- Select, test and implement Microcontroller (leaning towards ESP32 Dev based solution, but open to suggestions)
- Develop control library for microcontroller
- Prove daisy-chaining of modules and the principals
- Complete Prototype with Surface Mount Components on Protoboard
- Transform Surface Mount solution Custom Circuit Board
- Mechanical & surface mounting integration for wife approval process
- Add delight to the experience when all tasks are complete 🎉
| Ref | Description | Maturity | Source | Protoboard Compatible |
|---|---|---|---|---|
| 1 | 2.54mm 2x17 Pin 34 Pin Straight Male Shrouded PCB Box header IDC Socket | Selected, tested | Aliexpress - 4,5€ shipped for 10x | Yes |
| 2 | Rejected, NOT viable | Yes | ||
| 2b | IRL540N MOSFET - Logic-level input capable of controlling 36A @ A0V | Selected, NOT tested | Aliexpress] - 1,4€ for 10x & nominal shipping | Yes |
| 3 | 75HC595 Shift Registers for multiplexing the output | Tested | Aliexpress - 3,5€ for 10x shipped | Yes |