I’m trying to add wireless control to an older device using the nRF24L01 2.4 GHz module.. I’ve got two modules, one as transmitter, one as receiver hooked up to Arduino with the RF24 library. Short-range tests work fine.

But I’m running into problems. Signal drops when the module is inside or behind metal parts. Sometimes the transmitter won’t reconnect unless I reset the receiver. There’s a small delay that makes control a bit sluggish.

I’ve tried moving the antenna, adding caps to stabilize power, and trimming message size, but no big improvement.

Has anyone here used nRF24L01 modules in enclosed or repaired devices? Any tips on better range, faster reconnection, or avoiding signal loss? Would the version with an external antenna help?

Thanks for any guidance!

There is no originaI cable, so a new a cable has to be done, and it requires to buy the connector and know the pinout set by Targus

The Laptop power out connector is used with a provided cable that in the other side has a multi tip connector for different laptops

⟐ Edited by author May 26, 2024 at 10:02 MST

Sony Personal Audio Docking System RDP-X200iP

When I power on, Green power icon lamp lights steady for two seconds, then the lamp flashes in sets of three. Left alone, unit will self-power off.

Pressing the Audio In or Bluetooth or iPod button and then powering on will have the respective lamp light for a second, then go out. Power lamp then behaves as described.

Verified all connections in the DC IN 20 V are tight. Reseat all connections. Tried different outlets. I have tried a Bose DC IN 17 V in supply, with same result.

Contacted Sony chat support. No suggestions. Emailed www.unitedradio.com - the Sony authorized repair. Unit is too old for them.

^{^^^}^^

Sony Personal Audio Docking System RDP-X200iP
https://www.sony.com/electronics/support...

AUGUST 2012

Speaker
Woofer: Approx. 76 mm (3 inches) dia. × 2
Tweeter: Approx. 25 mm (1 inch) dia. × 2

Input
AUDIO IN jack (ø 3.5 mm stereo minijack)
Impedance: 50 kΩ
Average input level: 245 mV

Power output
20 W + 20 W (at 1% harmonic distortion)

Power source
Rated external power source: DC IN 20 V (with supplied AC
adaptor (AC 100 V - 240 V, 50 Hz/60 Hz))

Dimensions
Approx. 356.0 mm × 168.1 mm × 155.8 mm (w/h/d)
(14 1/16 inches × 6 5/8 inches × 6 3/16 inches)
(incl. projecting parts and controls)

Mass
Approx. 2.2 kg (4 lb 14 oz)

⟐ Edited by author March 28, 2022 at 9:33 MST

My question is, how do I get started with diagnosis and find the fault? Do I look for short circuits, or faulty components? Appreciate any help in advance!!

⟐ Commented March 26, 2020 at 6:46 MST

How can I figure out and get what is needed to replace the blown component or what it might cost to get it serviced?

[I should add that OWC hasn’t been any help even though it was their own products that caused the problems. They did eventually offer to honor their warranty on the older Firewire / USB 2.0 drive enclosure and defective Firewire cable that caused this damage, but I had already replaced that drive enclosure with a newer USB 3.0 enclosure because they were taking so long to respond. Without fixing the Firewire port on the OWC Thunderbolt 2 Dock, I didn’t have any reason to pursue getting the older drive enclosure warrantied.]

high pitch noise can be heard from the dock.

Sounds like a capacitor is bad. Which of capacitors has the highest probabilty of being the culprit?

Mikael

⟐ Commented September 05, 2015 at 16:40 MST