RetroChallenge: C64 I.D.IoT.R Update #2

UniJoystiCle WiFi receiver v0.4.1. Compatible with SX64 and C128D
  • Ordered a rubber belt + pulley to control the dimmer from the printer header
  • New UniJoystiCle PCB arrived (v0.4.1). I assembled one and works Ok both on the SX64 and the C128D. I just need to create a “user port” power cable for the SX64 since it doesn’t have a datasette port.
  • Started the UniJoystiCle desktop client in order to control the dimmer from the PC/Mac.
New UniJoystiCle Controller client for Windows, Mac and Linux

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Retrochallenge: Building the C64 I.D.IoT.R

I started building the C64 I.D.IoT.R a few months ago, but never finished it. What better than to finish it for the Retro Challenge contest.

C64 I.D.IoT.R is a smart light controlled from a C64. Its name means:

  • C64: Commodore 64
  • I: Intelligent
  • D: Dimmer
  • IoT: Internet Of Things:
  • R: RRRRR

What I have done so far is this: (and is not part of the contest since I built it two months ago):

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UniJoystiCle update #2


  • Station Mode (with or without WPS)
  • Inactivity timeout  & Joystick statistics
  • Auto-firmware upgrade
  • Better ways to power the WiFi device

Station mode and other features

One thing that bothered me was that I needed to switch WiFi networks every time that I wanted to use the UniJoystiCle. Not a major issue, but not ideal specially if you use your phone both for the UniJoystiCle and for “regular” stuff.

To solve that issue, I added WiFi Station mode support (Access Point mode is still supported). Basically the UniJoystiCle WiFi device, when in Station mode, can connect to any WiFi network. It also supports WPS (an auto-auth way to connect to a network). If Station mode fails, it will default to Access Point mode.

In order to switch to Station mode you have to:

  • Install firmware v0.4.3 (see below for more info)
  • Boot the UniJoystiCle WiFi device (it will boot in Access Point mode)
  • Connect to the unijoysticle-xxyyzz WiFi Network
  • Open the web page: http://unijoysticle.local
  • Select “Station” mode, put the credential (SSID and password) and reboot!

From http://unijoysticle.local you can also configure the “Inactivity timeout”: how many seconds without activity should elapse before all the joystick lines are set to Low (simulates no joystick movements).

I also added statistics: It tells you how many seconds you spent on the different joystick positions, and how many movements you did. Useful, right?🙂

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UniJoystiCle news #1

I’ve just released a new firmware version for the UniJoystiCle (v0.4.0). It supports the new Commando Mode.

The new Android client with Commando mode can be downloaded from here:

The iOS client will be available as soon as Apple approves it (usually a few days) and will be available here:

In order to upgrade the firmware, please follow these steps:

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