RMweb Premium John Isherwood Posted June 13 RMweb Premium Share Posted June 13 I have just made my first purchase from Temu! https://share.temu.com/7SubEZqi9RA You may recall that I successfully experimented with Aliexpress variable voltage regulator boards as controllers for model railways, so I thought that the Temu controllers might have a similar application. The minimum order for Temu is £10, so I ordered five items. The input for the circuit boards must be DC (polarity critical), so I've ordered some 3A bridge rectifiers. Once again, I will be building walkabout controllers, so I have also ordered some small ABS instrument boxes. Very promptly, the circuit boards have arrived from Temu and the boxes, ordered yesterday, arrived today. I just await the bridge rectifiers before commencing assembly and test of the first controller. The Temu boards are very comprehensive, including a control knob and a wired-in, separate reversing / centre-off switch. I will report further shortly. John Isherwood. 1 1 Link to post Share on other sites More sharing options...
RMweb Premium John Isherwood Posted June 16 Author RMweb Premium Share Posted June 16 (edited) On 13/06/2024 at 20:37, cctransuk said: I have just made my first purchase from Temu! https://share.temu.com/7SubEZqi9RA You may recall that I successfully experimented with Aliexpress variable voltage regulator boards as controllers for model railways, so I thought that the Temu controllers might have a similar application. The minimum order for Temu is £10, so I ordered five items. The input for the circuit boards must be DC (polarity critical), so I've ordered some 3A bridge rectifiers. Once again, I will be building walkabout controllers, so I have also ordered some small ABS instrument boxes. Very promptly, the circuit boards have arrived from Temu and the boxes, ordered yesterday, arrived today. I just await the bridge rectifiers before commencing assembly and test of the first controller. The Temu boards are very comprehensive, including a control knob and a wired-in, separate reversing / centre-off switch. I will report further shortly. John Isherwood. Well, first guinea-pig assembled! Temu-sourced PWM circuit-board inserted into instrument case, by drilling holes for the potentiometer shaft and the cable, and a cut-out for the reversing / off switch. Bridge rectifier wired into board input terminals - watch out for the polarity markings beneath the board! Four-core cable wired to rectifier input wires and board output terminals. Standard (for me) four pin audio jack fitted to the other end of the cable - and off we went! Performance is very good indeed; plenty of fine control over the full rotation of the control knob. I did find that a Bachmann Type 2 was a little eager to take off - but the other locos that I tested were very happy under the influence of the PWM control. I now have three types of controller from which to choose - Gaugemaster, Aliexpress voltage regulator and Temu PWM. Over time, I will check each of my locos and decide which type of controller suits each model the best. John Isherwood. Edited June 16 by cctransuk 4 1 3 1 Link to post Share on other sites More sharing options...
Barclay Posted June 20 Share Posted June 20 I've built one around the ZK-MG motor controller, which is similar but doesn't have a reversing switch, and results are very promising! Good current capacity too which will be just the thing for my older US loco's. 1 Link to post Share on other sites More sharing options...
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